A STUDY ON FEASIBILITY AND EFFECTS EVALUATION METHOD OF INTRODUCTION OF PACKAGED TDM MEASURES Yusuke KANDA Consulting Engineer Oriental Consultants Co., Ltd. 16-28 Nanpeidai-cho, Shibuya-ku, Tokyo 150-0036 Japan Fax: +81-3-6311-8011 E-mail: [email protected]Akimasa FUJIWARA Professor Graduate School for International Development and Cooperation Hiroshima University 1-5-1 Kagamiyama, Higashi-Hiroshima 739-8529 Fax: +81-82-424-6921 E-mail: [email protected]Norihiro IZUMI Department Manager of Transportation Oriental Consultants Co., Ltd. 16-28 Nanpeidai-cho, Shibuya-ku, Tokyo 150-0036 Japan Fax: +81-3-6311-8021 E-mail: [email protected]Yoshihisa ASADA,and Junji YAMADA Consulting Engineer Oriental Consultants Co., Ltd. 16-28 Nanpeidai-cho, Shibuya-ku, Tokyo 150-0036 Japan Fax: +81-3-6311-8021 E-mail: [email protected]Abstract: Traffic congestions in local cities are caused by concentration of car commuters into specific local points in time and space. Staggered working hours (SWH) that promote temporal dispersion of commuting traffic seem effective in easing the congestions in morning rush hours. The local cities that have often applied packaged TDM measures which jointly combine SWH with another effects. It is important to evaluate the effects of introduction of TDM in advance, however there is relatively less method to forecast and evaluate the packaged TDM measures. This paper aims to propose a measure that investigates feasibility of introduction of TDM, and to develop a convenient method to evaluate introduction of packaged TDM measures by considering synergy/counterbalance effects. As an empirical study, the effects of the measures, combining SHW with park and ride are evaluated in two typical local cities. Key Words: Transportation Demand Management, Demand Forecasting, Measure Evaluation 1. INTRODUCTION Traffic congestions in local cities are caused by the concentration of car commuters into specific local points in time and space. Staggered working hours (SWH) that promote temporal dispersion of commuting traffic seem effective in easing the congestions in morning rush hours. Meanwhile, measures that improve the convenience of public transportation, such as Park and Ride, Park and Bus-Ride, PTPS(Public Transportation Priority Systems; priority traffic signal), have been introduced in order to promote non-car commuting. The local cities that have often applied packaged TDM measures that jointly combine SWH with another effects (“Urban transportation 2001”, (2001) etc.). The estimated effects may be more overestimated or underestimated than actually introduced unless analysts consider synergy or counterbalance effects of packaged measures. Most of the previous studies that aims to evaluate TDM measures deal with independently and singly introduced measures. There are few studies that suggest evaluating packaged TDM measures. Journal of the Eastern Asia Society for Transportation Studies, Vol. 6, pp. 2378 - 2393, 2005
